Article
Environmental Sciences
Xinxin Zhang, Aaron J. Specht, Ellen Wells, Marc G. Weisskopf, Jennifer Weuve, Linda H. Nie
Summary: The study compared bone lead concentrations measured by portable XRF and KXRF devices in different age groups and occupational exposure history. Results showed a significant correlation between measurements from the two devices, with portable XRF measurements affected by scan time and soft tissue thickness but still comparable in quantifying bone lead concentrations.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biochemistry & Molecular Biology
Xinxin Zhang, Ellen M. Wells, Aaron J. Specht, Marc G. Weisskopf, Jennifer Weuve, Linda H. Nie
Summary: This study evaluated the sensitivity of portable X-ray fluorescence (XRF) technology for in vivo bone strontium quantification among adults. Results showed that the uncertainty of individual measurement depended on overlying soft tissue thickness. Bone strontium concentration increased as age increased.
JOURNAL OF TRACE ELEMENTS IN MEDICINE AND BIOLOGY
(2022)
Article
Chemistry, Inorganic & Nuclear
David E. B. Fleming, Samantha L. Crook, Colby T. Evans, Michel N. Nader, Manuel Atia, Jason M. T. Hicks, Ellen Sweeney, Christopher R. McFarlane, Jong Sung Kim, Erin Keltie, Anil Adisesh
Summary: The study evaluated arsenic concentrations in toenail clippings of Atlantic Canadian participants using a portable XRF approach, with high correlation coefficients up to 0.89 compared to ICP-MS measurements under certain conditions. The XRF method demonstrated promising sensitivity and specificity in assessing arsenic concentration in toenail clippings.
APPLIED RADIATION AND ISOTOPES
(2021)
Article
Spectroscopy
S. Porcinai, A. Cagnini, M. Galeotti, M. Ferretti
Summary: The investigation of alloy composition is crucial for studying archaeological and historical metal artifacts. Portable X-ray fluorescence is commonly used for non-invasive alloy analysis, but its quantitative results are not reliable when the metal surface is covered by corrosion or patination layers. In such cases, micro samples representative of the bulk alloy need to be taken. This study evaluates and compares the accuracy and precision of X-ray fluorescence quantitative data obtained from surface and shavings samples, and suggests that a suitable calibration model using certified reference materials should be applied. Repeatability tests show consistent results within 5%, with slightly higher uncertainties for shavings compared to surface measurements. Two case studies of archaeological and Renaissance bronze artifacts are also discussed.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Food Science & Technology
Nondita Malo, Debashish Mazumder, Jagoda Crawford, Patricia Gadd, Karthik Gopi, Neil Saintilan, Jesmond Sammut
Summary: Seafood elemental profiling (SEP) is a useful method for analyzing elements in seafood to determine their origin and quality. Traditional methods have limitations, but portable handheld X-ray fluorescence (pXRF) analysis shows promise as an alternative. This study demonstrates the potential of pXRF for industry-level analysis, but further improvements are needed for instrument calibration to account for factors that can affect the results.
Article
Agronomy
Callum P. Scotson, Arjen van Veelen, Katherine A. Williams, Nicolai Koebernick, Dan McKay Fletcher, Tiina Roose
Summary: The aim of the study was to develop an experimental system that allowed the application of iodinated contrast media to intact plant roots in soil and was compatible with time-resolved synchrotron X-ray computed tomography imaging. By using synchrotron X-ray computed tomography and synchrotron X-ray fluorescence mapping, the system was successful in visualizing the translocation of contrast media through root vasculature into the leaves, providing insights into internal fluid transport mechanisms and anatomical features of the plants.
Article
Chemistry, Multidisciplinary
Qianqian Xu, Wenjing Xia, Lazhen Zhou, Zhengwei Zou, Qiuxia Li, Lijun Deng, Sha Wu, Tao Wang, Jingduo Cui, Zhiguo Liu, Tianxi Sun, Junsong Ye, Fangzuo Li
Summary: Liver fibrosis is an important stage in the development of chronic liver disease. In this study, confocal mu-XRF was used to analyze the deposition of iron in liver fibrosis induced by TAA. The results suggest that iron deposition may play a significant role in the progression of hepatic fibrosis induced by TAA.
Article
Spectroscopy
Brendan J. Orenstein, David T. Flannery, Lachlan W. Casey, William T. Elam, Christopher M. Heirwegh, Michael W. M. Jones
Summary: A new automated method based on statistical threshold is proposed to remove diffraction peaks from multiple-detector spectra, which retains more fluorescence data and increases the information content available for diffraction-free elemental quantification and mapping. The proposed method does not require an increase in dwell times or additional data to be collected to compensate for the removed fluorescence data.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Anthropology
Ashley McGarry, Bruce Floyd, Judith Littleton
Summary: The study demonstrates that pXRF can effectively differentiate bone fragments with different degrees of burning and that elemental profiles accurately reflect burning temperatures.
ARCHAEOLOGICAL AND ANTHROPOLOGICAL SCIENCES
(2021)
Article
Spectroscopy
Stefano Martinuzzi, Claudia Giovani, Walter Giurlani, Emanuele Galvanetto, Nicola Calisi, Michael Casale, Claudio Fontanesi, Samuele Ciattini, Massimo Innocenti
Summary: The proposed method for measuring metallic coating thickness relies on self-produced standards made through an electroplating process and ensures sufficiently homogeneous thickness distribution consistent with certified standard specifications.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2021)
Article
Spectroscopy
Tsugufumi Matsuyama, Masanori Nakae, Masashi Murakami, Yukihiko Yoshida, Masahiko Machida, Kouichi Tsuji
Summary: Reducing measurement time is crucial in XRF analysis. The Bayesian theorem was applied to estimate XRF intensity, resulting in more than 85% reduction in measurement time for accurate intensity measurement.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Materials Science, Multidisciplinary
Lijun Xiang, Gang Liu, Lin Kong, Jie Zhang, Xiajiao Zhu, Hongping Zhou, Xingyuan Yang, Kexue Deng, Ying Liu
Summary: The development of multifunctional bio-probes for tumor-imaging is challenging and urgently needed. BMLGF@FA, with its excellent performance in tumor imaging and low toxicity, shows promising potential as a contrast agent for cancer clinical diagnosis.
Article
Chemistry, Multidisciplinary
Jilong Lu, Jinke Guo, Qiaoqiao Wei, Xiaodan Tang, Tian Lan, Yaru Hou, Xinyun Zhao
Summary: This study proposes a new method to address the matrix effect in portable X-ray fluorescence spectrometry (pXRF) analysis of trace elements. By employing multiple linear regression analysis and using major elements closely related to the elements to be measured as correction indicators, higher quality calibration data can be obtained.
APPLIED SCIENCES-BASEL
(2022)
Article
Soil Science
Ndiye M. Kebonye, Kingsley John, Somsubhra Chakraborty, Prince C. Agyeman, Samuel K. Ahado, Peter N. Eze, Karel Nemecek, Ondrej Drabek, Lubos Boruvka
Summary: This study compared the accuracy of different regression models in estimating total arsenic in polluted floodplain soils of Pribram, Czech Republic, showing that all four models were able to accurately predict arsenic levels. Future research should consider including additional predictors and covering a wider range of soils to improve model robustness.
Article
Metallurgy & Metallurgical Engineering
Yuya Akahane, Sunfun Nakazawa, Shinsuke Kunimura
Summary: In this study, a method for detecting low concentrations of elements in high purity water samples using a portable total reflection X-ray fluorescence (TXRF) spectrometer was presented. The detection limit was improved by preparing the dry residue of a sample droplet with a large volume on a hydrophobic film coated sample holder.
ISIJ INTERNATIONAL
(2022)
Article
Biochemistry & Molecular Biology
Gina A. Castiblanco-Rubio, Teresa Munoz-Rocha, Martha M. Tellez-Rojo, Adrienne S. Ettinger, Adriana Mercado-Garcia, Karen E. Peterson, Howard Hu, Alejandra Cantoral, E. Angeles Martinez-Mier
Summary: This study found that there was no significant difference in urinary fluoride (UF) levels between pregnancy and one year postpartum, but UF levels increased every 10 gestational weeks during pregnancy. Different dietary influences on UF levels were identified in each state, with calcium supplements decreasing UF only during pregnancy and table salt use increasing UF only at one-year postpartum.
BIOLOGICAL TRACE ELEMENT RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
Chunping Hu, Susu Wang, Deqing Wu, Chonghuai Yan, Meiqin Wu
Summary: This study investigates the impact of subclinical hypothyroidism (SCH) during pregnancy on the spatial learning and memory ability of offspring, and finds that SCH inhibits the learning and memory ability of offspring, which may be related to the decreased expression of thyroid hormone receptor alpha (TRα).
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2022)
Article
Environmental Sciences
Yabin Hu, Jian Cheng, Yong Yin, Shijian Liu, Jianguo Tan, Shenghui Li, Meiqin Wu, Chonghuai Yan, Guangjun Yu, Yi Hu, Shilu Tong
Summary: The study found that both intra- and inter-day temperature variability may trigger childhood asthma, with higher diurnal temperature range having greater impacts in the cold season and temperature changes between neighboring days having bigger effects in the warm season.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Yihong Wang, Yaqian Wang, Chonghuai Yan
Summary: This study explored the influence of trace element levels on the intellectual development of school-aged children. The results showed a negative correlation between lead (Pb) and copper (Cu) levels in cord blood and children's cognitive abilities. Prenatal low-level exposure to arsenic (As) was found to adversely affect girls' intelligence quotient. Additionally, differences in selenium (Se) levels in blood were observed between boys and girls, with high Se levels associated with different effects on cognitive abilities based on gender.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Chenyin Dong, Junxia Liu, Paul Harvey, Chonghuai Yan
Summary: Household dust is an important pathway for children's environmental Pb exposure. This study examines the Pb concentration and isotopic compositions in household dust samples from Shanghai, and finds that children living in lower priced homes have higher risk of Pb exposure. The data indicate that Pb in household dust is mainly derived from coal combustion and solid waste incineration.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Environmental Sciences
Richard Fuller, Philip J. Landrigan, Kalpana Balakrishnan, Glynda Bathan, Stephan Bose-O'Reilly, Michael Brauer, Jack Caravanos, Tom Chiles, Aaron Cohen, Lilian Corra, Maureen Cropper, Greg Ferraro, Jill Hanna, David Hanrahan, Howard Hu, David Hunter, Gloria Janata, Rachael Kupka, Bruce Lanphear, Maureen Lichtveld, Keith Martin, Adetoun Mustapha, Ernesto Sanchez-Triana, Karti Sandilya, Laura Schaefli, Joseph Shaw, Jessica Seddon, William Suk, Martha Maria Tellez-Rojo, Chonghuai Yan
Summary: The Lancet Commission on pollution and health reported that pollution was responsible for 9 million premature deaths in 2015, making it the world's largest environmental risk factor for disease and premature death. Updated data from 2019 shows that pollution is still responsible for approximately 9 million deaths per year, with reductions in some types of pollution offset by increases in others. Despite efforts, little progress has been made in addressing pollution, particularly in low-income and middle-income countries.
LANCET PLANETARY HEALTH
(2022)
Article
Environmental Sciences
Yaqian Wang, Susu Wang, Yihong Wang, Anxin Lu, Lulu Cao, Ju Wang, Zhenyan Gao, Chonghuai Yan
Summary: This study investigated the prenatal exposure to arsenic and its effects on birth size in Wujiang City, Jiangsu, China. The results showed that low-level prenatal exposure to arsenic could have negative effects on birth weight, especially among male infants.
Article
Psychology, Developmental
Xiangrong Guo, Shiwei Jiang, Jian Xu, Ying Tian, Fengxiu Ouyang, Xiaodan Yu, Junxia Liu, Chonghuai Yan, Jun Zhang
Summary: This study found that both single and combined prenatal exposures to lead/stress impaired infant neurodevelopment, and the effects of combined exposure may be more profound than single exposures. Combined exposure in early pregnancy may be associated with worse neurodevelopmental outcomes than combined exposure around birth, especially in social-emotional development.
DEVELOPMENTAL COGNITIVE NEUROSCIENCE
(2022)
Article
Environmental Sciences
An-xin Lu, Su-su Wang, Xi Xu, Mei-qin Wu, Jun-xia Liu, Min Xu, Lu-Lu Cao, Ju Wang, Wei Wu, Hui Li, Chong-huai Yan
Summary: This study aimed to investigate the impact of cord blood lead on neurodevelopment in children within sex subgroups. The results showed that cord blood lead concentrations were negatively associated with fine motor scores in female children, but not in male children. Additionally, cord serum DHA levels were positively correlated with fine motor scores in male children. These findings suggest that prenatal lead exposure may lead to decreased motor function, but this phenomenon is only observed in female children. Furthermore, DHA may serve as a protective factor against lead exposure in boys. Further studies are needed to explore the associations between prenatal lead exposure and neurobehavioral development, as well as the mechanism of sex differences.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Environmental Sciences
Yabin Hu, Yiting Chen, Shijian Liu, Jianguo Tan, Guangjun Yu, Chonghuai Yan, Yong Yin, Shenghui Li, Shilu Tong
Summary: The interest in assessing the effects of exposure to greenspace on human health, especially asthma in children, has been increasing due to urbanization, physical inactivity, and air pollution. This study conducted a city-wide cross-sectional study in Shanghai, China, involving 16,605 children to investigate the association between residential greenspace and asthma. The study found that an increase in greenspace was associated with a decreased odds of asthma, and the association was modified by ambient temperature and residential area.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Hui Hua, Lihua Huang, Bo Yang, Shiwei Jiang, Yijing Zhang, Junxia Liu, Chonghuai Yan, Jian Xu
Summary: This study found that prenatal combined exposure to lead and stress had a greater impact on neurodevelopment, as well as on the composition of intestinal microbiota and the bidirectional communication with the central nervous system. Gut microbiota may mediate the effects of prenatal lead and stress co-exposure on neurodevelopmental deficits.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Environmental Sciences
Yabin Hu, Yiting Chen, Shijian Liu, Jianguo Tan, Guangjun Yu, Chonghuai Yan, Yong Yin, Shenghui Li, Shilu Tong
Summary: Previous studies on the link between greenspace exposure and childhood asthma have focused only on residential or school greenspace and have not considered the combined exposure at both homes and schools. This study conducted in Shanghai, China, found that increased greenspace exposure was associated with a lower risk of childhood asthma, and this association was modified by various socio-environmental factors.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Environmental Sciences
Yi-Hong Wang, Ya-Qian Wang, Xiao-Gang Yu, Yin Lin, Jun-Xia Liu, Wei-Ye Wang, Chong-Huai Yan
Summary: Juvenile zebrafish exposed to environmental arsenic showed behavioral abnormalities, including anxiety and social deficits, along with increased oxidative stress in the brain, decreased dopamine content, and altered gene transcription related to dopamine metabolism. However, treatment with N-acetylcysteine helped reduce oxidative stress and improve social behavior, dopamine levels, monoamine oxidase activity, and gene transcription in zebrafish.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Clinical Neurology
Ting Yu, Dongqing Xu, Jue Fan, Hui Hua, Xiangrong Guo, Yijing Zhang, Shiwei Jiang, Lihua Huang, Yining Jiang, Yuefen Wang, Chonghuai Yan, Jian Xu
Summary: This study found that high homework burdens were associated with neurobehavioral problems in adolescents. Sleep durations may mediate these associations, and sex may modify the relationships. The study collected information on homework burdens, bedtime/wake-up-time, and neurobehavioral problems from 609 middle-school students and identified patterns and associations through statistical analysis.
JOURNAL OF AFFECTIVE DISORDERS
(2023)
Article
Urology & Nephrology
John Danziger, Laura E. Dodge, Howard Hu, Kenneth J. Mukamal
Summary: The study found that CKD is associated with higher blood lead levels, especially among Black individuals, while simultaneously leading to lower urinary lead levels. This suggests that CKD may heighten susceptibility to heavy metal exposure by reducing elimination.
